Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"valve train"”.
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Valve seating impact as a source of valve train noise
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Thermal efficiency and emission analysis of advanced thermodynamic strategies in a multi-cylinder diesel engine utilizing valve-train flexibility
… conditions is analyzed using a fully flexible valve-train on a modern diesel engine. The experimental investigation focuses on thermal management during idling and high-way cruise conditions. In addition, simulation are used to explore the fuel efficiency of Miller cycling at elevated geometric …
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Design and prototype of dual loop lubricant system to improve engine fuel economy, emissions, and oil drain interval
… from internal combustion engines place constraints on lubricant formulations necessary for controlling wear and reducing friction. Viscosity reduction results in fuel economy improvement, with benefits of up to three percent reported in some studies. Such reductions are limited by engine …
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The feasibility of using electrostatic charge condition monitoring for lubricant additive screening
… test apparatus used to simulate: engine valve-train, manual transmission synchroniser and automatic transmission clutch tribo-contacts. Additive performance in these simulated contacts was assessed by electrostatic surface charge measurements and cross-correlated with friction, wear and …
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Simulations And Experiments Of Fuel Injection, Mixing And Combustion In Di Gasoline Engines
… of spray patterns, injection timing and flexible valve-train on the bulk flow motion and fuel-air mixing in an optical accessible engine, in terms of tumble and swirl ratios, turbulence level, and fuel wall film behaviors are discussed. Using integral analyses of the simulation results, the …
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The mechanics of valve cooling in internal-combustion engines. Investigation into the effect of VSI on the heat flow from valves towards the cooling jacket.
Controlling the temperature of the exhaust valves is paramount for proper functioning of engines and for the long lifespan of valve train components. The majority of the heat outflow from the valve takes place along the valve-seat-cylinder head-coolant thermal path which is significantly influenced …
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The effect of base stock and additive packages in an automotive oil on the friction and wear behaviour of overhead camshaft and finger follower systems
The introduction of overhead camshaft valve train systems some 25 years ago has resulted in improved engine performance and efficiency, this in turn however, has caused increased wear problems. In order to understand the tribological behaviour of overhead camshaft systems, test engines and …
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Vliv pružnosti rozvodového mechanismu na pohyb ventilu
Cílem této diplomové práce je porovnání pohybu ventilu jedné sestavy (SVT) a pohybů jednotlivých ventilů kompletní sestavy s pružným vačkovým hřídelem s ohledem na dynamické vlastnosti. Součástí práce je také kinematický návrh v programu VALKIN. Dynamická část je řešena v MBS programu Virtual …